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[ARM] 3551/1: S3C24XX: PM code failes to compile with CONFIG_DCACHE_WRITETHROUGH
Patch from Ben Dooks If CONFIG_CPU_DCACHE_WRITETHOUGH is set, then the S3C24XX PM code fails to compile, as there is no need to flush the D-cache, the flush function arm920_flush_kern_cache_all() is not compiled. Fix the code to not use this if the config is set. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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2 changed files with 6 additions and 0 deletions
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@ -58,7 +58,11 @@ unsigned long s3c_pm_flags;
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/* cache functions from arch/arm/mm/proc-arm920.S */
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#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
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extern void arm920_flush_kern_cache_all(void);
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#else
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static void arm920_flush_kern_cache_all(void) { }
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#endif
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#define PFX "s3c24xx-pm: "
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@ -66,7 +66,9 @@ ENTRY(s3c2410_cpu_suspend)
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@@ flush the caches to ensure everything is back out to
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@@ SDRAM before the core powers down
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#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
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bl arm920_flush_kern_cache_all
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#endif
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@@ prepare cpu to sleep
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